Rated 1 out of 5 stars

This addon works so much better with Seamonkey. There is no integration between Thunderbird and Sunbird with this addon. It also ties up a tremendous amount of resources. I constantly get popups about calendar.js. I must disable the addon so I can use Thunderbird. Understand this is a beta version.

Once the excessive resource use is overcome, I suppose I could manually set Lightning and Sunbird to use the same calendar which should work if it is a local calendar and I do not attempt to open the same event with Lighting in Thunderbird and in Sunbird.

I wish they never split the development of the independent programs from the suite. Support for too many variations means someone gets left out.